using System;

    using Microsoft.Xrm.Sdk;

    using Microsoft.Xrm.Sdk.Query;

    using System.Collections.Generic;

    using Microsoft.Crm.Sdk.Messages;

    /// <summary>

    /// 权限

    /// </summary>

    public class PrivilegeHelper

    {

        public static readonly string entityName = "privilege";

        /// <summary>

        /// 查询一个实体的权限

        /// 一般的实体都有8个主要的权限

        /// </summary>

        public List<Privilege> SearchPrivilegeByEntityName(IOrganizationService service, string name)

        {

            List<Privilege> list = new List<Privilege>();

            //一般的实体都有8个权限，这里如果实体是：account

            //prvCreateAccount: 创建客户,prvReadAccount: 读取客户记录,prvWriteAccount: 改动客户

            //prvDeleteAccount: 删除客户,prvAppendAccount: 追加,prvAppendToAccount: 追加到

            //prvAssignAccount: 分配客户,prvShareAccount: 共享客户

            QueryExpression query = new QueryExpression();

            query.EntityName = entityName;

            query.ColumnSet = new ColumnSet("name");

            query.Criteria.AddCondition(new ConditionExpression("name",ConditionOperator.Like,"prv%" + name));

            EntityCollection ec = service.RetrieveMultiple(query);

            if (ec != null && ec.Entities.Count > 0)

            {

                foreach(Entity en in ec.Entities)

                {

                    Privilege p = new Privilege();

                    p.id = en.Id;

                    p.name = en["name"].ToString();

                    list.Add(p);

                }

            }

            return list;

        }

        /// <summary>

        /// 通过id查询一个权限

        /// </summary>

        /// <param name="service">服务</param>

        /// <param name="privilegeId">权限id</param>

        public Privilege SearchPrivilegeById(IOrganizationService service,Guid privilegeId)

        {

            Entity en = service.Retrieve(entityName, privilegeId, new ColumnSet("name"));

            Privilege p = new Privilege() { id = privilegeId };

            p.name = en["name"].ToString();

            return p;

        }

        /// <summary>

        /// 查询一个用户具有的权限

        /// </summary>

        /// <param name="service">服务</param>

        /// <param name="userId">用户</param>

        public void SearchPrivilegeByUserId(IOrganizationService service,Guid userId)

        {

            RetrieveUserPrivilegesRequest request = new RetrieveUserPrivilegesRequest();

            request.UserId = userId;

            RetrieveUserPrivilegesResponse response = (RetrieveUserPrivilegesResponse)service.Execute(request);

            if (response.RolePrivileges != null)

            {

                RolePrivilege[] arrayResult = response.RolePrivileges;

            }

        }

        /// <summary>

        /// 检索系统中定义的特权集

        /// </summary>

        /// <param name="service">服务</param>

        public List<Privilege> SearchAllPrivilege(IOrganizationService service)

        {

            List<Privilege> list = new List<Privilege>();

            RetrievePrivilegeSetRequest request = new RetrievePrivilegeSetRequest();

            RetrievePrivilegeSetResponse response = (RetrievePrivilegeSetResponse)service.Execute(request);

            if (response.EntityCollection != null)

            {

                EntityCollection ec = response.EntityCollection;

                if (ec != null && ec.Entities.Count > 0)

                {

                    foreach (Entity en in ec.Entities)

                    {

                        Privilege p = new Privilege();

                        p.id = en.Id;

                        p.name = en["name"].ToString();

                        list.Add(p);

                    }

                }

            }

            return list;

        }

        public class Privilege

        {

            public Guid id { get; set; }

            public string name { get; set; }

        }

    }